7442 View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

MFG CO.

7442

PIP Controller

SANYO -> Panasonic 

LC7442

P. 3 Block Diagram

1 A/D converter

2 Loop filter

3 Loop filter

4 Micro-

processor

5 Input data

timing control

6 A/D control

7 Sub-screen PLL

8 Field

determination

9 Main screen PLL

10 Serial data

controller

11 Vertical filter

(calculation and line memory)

12 Write address

13 Read address

14 Output buffer

15 Control register

16 Write data

control

17 Selector

18 Memory control

19 Read data

control

20,21,22

D/A converter

D/A converter

23 Output control

24 Dual port

DRAM:

256 kbytes

or 1 Mbyte

D/A converter

P. 4 Component-Type PIP System Structural Diagram

1 A/D clamp

2 Reset

3 Main vertical synchronization

4 Main horizontal synchronization

5 Sub-screen vertical synchronization

6 Sub-screen horizontal synchronization

7 Micro-

processor

8 Dual port RAM

9 Main/sub switching (blanking)

10 Frame

P. 7 Function Descriptions

(1) Main screen

(2) Or:

P. 8 Frame control

(6) 1

(7) 1

2

3

4

5

6

7

Sub-screen Sub-screen

There are 4 wipe types.

An operating time of about 1.0 seconds.

V wipe

H wipe

VH wipe

D wipe

Off

Off

Off

Off

No. 4412-23/12

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